import java.util.Scanner;

/**
   Reads a string and counts all vowels contained in that string.
   Vowels are A E I O U a e i o u. 

   Input: the value of s, a string
   Output: the number of all the vowels in s
*/
public class CountVowels
{
   public static void main(String[] args)
   {      
      Scanner in = new Scanner(System.in);
      String s = in.nextLine();
      int count=0;

      // your work here      
      for(int i=0;i<s.length();i++){
         char m=s.charAt(i);
         if(m=='a'||m=='e'||m=='i'||m=='o'||m=='u'||m=='A'||m=='E'||m=='I'||m=='O'||m=='U'){
            count++;
         }
      }
      System.out.println(count);
   }
}